Inventor · disambiguated record
Takaaki Toyooka
Also filed as: TOYOOKA TAKAAKI
40 granted patents·13 pending applications·507 citations·filing 1984–2010
98Inventor score
Top patents by PatentIndex Score
53 records- 0194US6006789AMethod of preparing a steel pipe, an apparatus thereof and a steel pipeKAWASAKI STEEL CO·Filed 1996·Granted Dec 28, 1999·32 cites·15 claims
- 0292US7842141B2Stainless-steel pipe for oil well and process for producing the sameJFE STEEL CORP·Filed 2009·Granted Nov 30, 2010·9 cites·22 claims
- 0389US6749954B2Welded steel pipe having excellent hydroformability and method for making the sameJFE STEEL CORP·Filed 2002·Granted Jun 15, 2004·25 cites·10 claims
- 0489US5301869AMachine for manufacturing welded steel pipes and method for handling the machineKAWASAKI STEEL CO·Filed 1990·Granted Apr 12, 1994·49 cites·15 claims
- 0587US6331216B1Steel pipe having high ductility and high strength and process for production thereofKAWASAKI STEEL CO·Filed 1998·Granted Dec 18, 2001·41 cites·20 claims
- 0686US6540848B2High strength, high toughness, seamless steel pipe for line pipeKAWASAKI STEEL CO·Filed 2001·Granted Apr 1, 2003·19 cites·7 claims
- 0785US7827842B2Hot forging facilityJFE STEEL CORP·Filed 2006·Granted Nov 9, 2010·5 cites·18 claims
- 0884US6290789B1Ultrafine-grain steel pipe and process for manufacturing the sameKAWASAKI STEEL CO·Filed 1998·Granted Sep 18, 2001·26 cites·16 claims
- 0984US5942132AMethod of and apparatus for producing steel pipesKAWASAKI STEEL CO·Filed 1997·Granted Aug 24, 1999·23 cites·38 claims
- 1083US8302309B2Process for producing bearing device for wheelHIRAI ISAO·Filed 2006·Granted Nov 6, 2012·9 cites·3 claims
- 1183US7806992B2Hot forged product with excellent fatigue strength, method for making the same, and machine structural part made from the sameJFE STEEL CORP·Filed 2006·Granted Oct 5, 2010·4 cites·6 claims
- 1281US6202463B1Plug and mandrel bar for seamless steel pipe rolling operation for manufacturing seamless steel pipeKAWASAKI STEEL CO·Filed 1997·Granted Mar 20, 2001·17 cites·7 claims
- 1380US6216940B1Pipe forming roll apparatus and methodKAWASAKI STEEL CO·Filed 2000·Granted Apr 17, 2001·10 cites·1 claims
- 1479US5599264ARoller width adjusting device for a divided type molding rollerKAWASAKI STEEL CO·Filed 1995·Granted Feb 4, 1997·19 cites·5 claims
- 1577US8118953B2Method for producing steel part having long rolling contact fatigue lifeIWAMOTO TAKASHI·Filed 2010·Granted Feb 21, 2012·4 cites·6 claims
- 1677US6216511B1Apparatus and method for smoothing a welded seam of steel pipeKAWASAKI STEEL CO·Filed 1998·Granted Apr 17, 2001·16 cites·13 claims
- 1775US6736910B2High carbon steel pipe excellent in cold formability and high frequency hardenability and method for producing the sameJFE STEEL CORP·Filed 2001·Granted May 18, 2004·7 cites·6 claims
- 1872US6755919B2Stainless steel tube for automobile structureJFE STEEL CORP·Filed 2001·Granted Jun 29, 2004·8 cites·3 claims
- 1972US6375059B2Method for smoothing steel pipe seam portionKAWASAKI STEEL CO·Filed 2001·Granted Apr 23, 2002·6 cites·3 claims
- 2071US7018488B2Steel pipe for use in reinforcement of automobile and method for production thereofJFE STEEL CORP·Filed 2001·Granted Mar 28, 2006·8 cites·9 claims
- 2170US5859124ALubricant for use in hot workKAWASAKI STEEL CO·Filed 1997·Granted Jan 12, 1999·22 cites·13 claims
- 2269US6846371B2Method for making high-strength high-toughness martensitic stainless steel seamless pipeJFE STEEL CORP·Filed 2002·Granted Jan 25, 2005·7 cites·13 claims
- 2369US6464802B1High Cr steel pipe for line pipeKAWASAKI STEEL CO·Filed 2000·Granted Oct 15, 2002·7 cites·20 claims
- 2464US5983689ALubricant for use in hot workKAWASAKI STEEL CO·Filed 1998·Granted Nov 16, 1999·18 cites·2 claims
- 2563US5784911AApparatus for manufacturing a welded pipeKUSAKABE ELECTRIC & MACH CO·Filed 1997·Granted Jul 28, 1998·18 cites·14 claims
- 2662US6095957ARoll for hot rolling having enhanced abrasion resistance and reduced carbide segregationKAWASAKI STEEL CO·Filed 1997·Granted Aug 1, 2000·31 cites·10 claims
- 2757US7678207B2Steel product for induction hardening, induction-hardened member using the same, and methods producing themJFE STEEL CORP·Filed 2004·Granted Mar 16, 2010·3 cites·8 claims
- 2856US6682829B2Welded steel pipe having excellent hydroformability and method for making the sameJFE STEEL CORP·Filed 2002·Granted Jan 27, 2004·1 cites·13 claims
- 2955US6949728B2Impeder for manufacturing welded pipeJFE STEEL CORP·Filed 2001·Granted Sep 27, 2005·5 cites·4 claims
- 3055US6505491B2Rolling mill and rolling-mill trainSUMITOMO HEAVY INDUSTRIES·Filed 2001·Granted Jan 14, 2003·3 cites·7 claims
- 3147US6723453B2Welded steel pipe having excellent hydroformability and method for making the sameJFE STEEL CORP·Filed 2002·Granted Apr 20, 2004·2 cites·11 claims
- 3247US4590781AMethod for forming an electric resistance welded steel pipeKAWASAKI STEEL CO·Filed 1984·Granted May 27, 1986·9 cites·6 claims
- 3347US2004238079A1Stainless-steel pipe for oil well and process for producing the sameFiled 2003·Application pending·0 cites
- 3446US5985209AMartensitic steel for line pipe having excellent corrosion resistance and weldabilityKAWASAKI STEEL CO·Filed 1997·Granted Nov 16, 1999·9 cites·5 claims
- 3546US4568015AMethod of forming electric welded steel tubeKAWASAKI STEEL CO·Filed 1984·Granted Feb 4, 1986·10 cites·12 claims
- 3646US2008247900A1Component for Machine Structure, Method of Producing the Same and Material for Induction HardeningJFE STEEL CORP·Filed 2005·Application pending·0 cites
- 3746US2008017283A1Steel For Machine Structural Use With Excellent Strength, Ductility, And Toughness And Method For Producing The SameMARUTA KEIICHI·Filed 2006·Application pending·0 cites
- 3845US2004099355A1Method of producing high-carbon steel pipe having superior cold workability and induction hardenabilityJFE STEEL CORP A CORP OF JAPAN·Filed 2003·Application pending·0 cites
- 3945US2007199632A1Steel part having long rolling contact fatigue life and method for producing the sameJTEKT CORP A CORP OF JAPAN·Filed 2007·Application pending·0 cites
- 4043US6041632APipe forming roll apparatus and methodKAWASAKI STEEL CO·Filed 1998·Granted Mar 28, 2000·9 cites·14 claims
- 4143US2008264524A1High-Strength Steel and Metal Bolt Excellent In Character of Delayed FractureMARUTA KEIICHI·Filed 2006·Application pending·0 cites
- 4242US7591914B2High-workability steel pipe and method of producing sameJFE STEEL CORP·Filed 2001·Granted Sep 22, 2009·0 cites·12 claims
- 4342US6136109AMethod of manufacturing high chromium martensite steel pipe having excellent pitting resistanceKAWASAKI STEEL CO·Filed 1998·Granted Oct 24, 2000·4 cites·12 claims
- 4441US5858128AHigh chromium martensitic steel pipe having excellent pitting resistance and method of manufacturingKAWASAKI STEEL CO·Filed 1996·Granted Jan 12, 1999·4 cites·4 claims
- 4541US2006196583A1Steel parts for machine structure, material therefor, and method for manufacture thereofHAYASHI TOHRU·Filed 2004·Application pending·0 cites
- 4641US2001027831A1Super fine granular steel pipe and method for producing the sameKAWASAKI STEEL CO·Filed 2001·Application pending·0 cites
- 4740US2006218985A1Tube with high dimensional accuracy, and method and device for manufacturing the tubeKENMOCHI KAZUHITO·Filed 2004·Application pending·0 cites
- 4839US6216520B1Rolling millKAWASAKI STEEL CO·Filed 1999·Granted Apr 17, 2001·3 cites·15 claims
- 4939US2003221753A1Super fine granular steel pipe and method for producing the sameKAWASAKI STEEL CO·Filed 2003·Application pending·0 cites
- 5039US2007163687A1Component for machine structural use and method for making the sameKUROSAWA NOBUTAKA·Filed 2005·Application pending·0 cites
Showing the top 50 of 53 patent records by PatentIndex Score.
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